This paper considers how two kernelized systems, Mach 3.0 with the BSD4.3 Single Server and CHORUS/MiX V.4, move data to and from files under a variety of circumstances. We give an overview of the kernel abstractions and system servers and describe in detail the read() and write() paths of these two systems. We then break down their read() and write() performance and compare them to two monolit...

Even in the most well-designed systems, some modules are difficult to maintain due to tangling of multiple concerns within a single monolithic codebase. Software plans have been proposed as an alternative multi-dimensional representation of software in which the programmer can implement independent concerns in separate views of the code. This reduces the difficulty of maintenance by allowing th...

A fast and highly sensitive ion chromatographic method using monolithic ODS columns was developed for the determination of nitrite (NO2-) and nitrate (NO3-) in seawater. Two monolithic ODS columns (50 mm x 4.6 mm i.d. + 100 mm x 4.6 mm i.d.) connected in series were coated and equilibrated with 5 mM cetyltrimethylammonium chloride (CTAC) aqueous solution. The column efficiency with 0.5 M NaCl a...

We report 56% efficient external cavity resonant second harmonic generation of a diode-laser pumped, CW single-axial-mode Nd :YAG laser. A theory of external doubling with a resonant fundamental is presented and compared to experimental results for three monolithic cavities of nonlinear MgO : LiNb03. The best conversion efficiency was obtained with a 12.5 mm long monolithic ring cavity doubler,...

This clinical report presents the reconstruction of a maxillary arch with a cement retained implant supported fixed prosthesis using a monolithic zirconia generated by CAD/CAM system on eight osseointegrated implants. The prosthesis was copy milled from an interim prosthesis minimizing occlusal adjustments on the definitive prosthesis at the time of delivery. Monolithic zirconia provides high e...

Even after decades of work to make monolithic kernels more secure, serious vulnerabilities in them are still reported every year. Because the entire monolithic kernel is in one address space, an attacker is just one vulnerability away from owning the entire machine. We argue that it is time to decompose monolithic kernels like Linux into smaller parts that run in isolated compartments and commu...

A novel hybrid organic-inorganic silica-based monolithic column possessing phenyl ligands for reversed-phase (RP) capillary electrochromatography (CEC) is described. The monolithic stationary phase was prepared by in situ co-condensation of tetraethoxysilane (TEOS) with phenyltriethoxysilane (PTES) via a two-step catalytic sol-gel procedure to introduce phenyl groups distributed throughout the ...

This paper deals with the design of a reconfigurable antenna that resembles a monolithic UWB bow-tie antenna for Ground Penetrating Radar (GPR) applications. In particular, the attention is focussed on the design of the balun system able to work in the frequency band 0.3–1 GHz; the effectiveness of the design is shown by examining the behaviour of the scattering parameters S11 for both the refe...

Fabricating all-ceramic restorations with minimal or no application of a secondary phase while maintaining esthetics has been a sought-after goal of the dental profession. The objective has been development of a monolithic material with optical properties similar to the natural tooth without the need for layering porcelain. This article examines some of the newer cubic zirconia materials used i...

In this work, the optical characteristics of monolithic passively mode-locked lasers (MLLs) fabricated from 1.24-μm InAs dots-in-a-Well (DWELL), 1.25-μm InGaAs single quantum well (SQW), and 1.55-μm GaInNAsSb SQW structures grown using elemental source molecular beam epitaxy (MBE) are reported. 5 GHz optical pulses with subpicosecond RMS jitter, high pulse peak power (1W) and narrow pulse width...